This website is for things like the Soccket Ball which is a ball that fills up on energy when people play with it. Thirty minutes of play is three hours of electricity.
This site allows you to draw and print beautiful schematics for lab reports. In-browser simulations make it easy to quickly learn electronics concepts via just-for-fun playing and guided exploration. This site's tools complement undergraduate and graduate electrical engineering classes, as well as high school and college physics curriculums.